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March 25, 1930. A; w. FERGUSON END ASSEMBLY FOR DRUM SCALE CYLINDERS Filed Jan.

@ MM flML Patented Mar. 25, 1930 PATENT FFEQE ANDREW W. FERGUSON, OF LATRGBE, PENNSYLVANIA, ASSIGNOR TO LINCOLN SCALE CORPORATION, F LATROBE, YENNSYLVANIA, A GGRPOBATION OLE DELAW'ARE END ASSEMBLY FOR DRUM-SCALE CYLINDERS Application filed January 7, 1929. Serial No. 330,725.

This invention relates generally to scales, and more particularly to yieldable cushion supports for end members of drum scale cylinders.

The drum housings or cylinders of drum scales are frequently provided with mirrors carried by rings secured to the ends of the housing. It has been customary to secure the mirrors to the ring by one set of fastening means, and to secure the cap to the cylinder of the drum scale by another setof fastening means. Clips welded to the inside of the ring have been used as a part of the mirror support, but these have been unsatisfactory because their presence causes blue spots in the porcelain finish applied to the rings. Moreover, this construction is relatively expensive.

My invention provides a yieldable cushion support for the mirror, and the mounting forms part of the connection for the cap and the cylinder. The relatively expensive clips are thus eliminated and a simpler and better mounting is obtained.

In the accompanying drawing which illustrates the present preferred embodiment of my invention;

Figure 1 is a perspective view of one end of a scale drum housing with the end assembly of my invention connected to the housing.

Figure 2 is a rear view of the assembled end,

Figures 3 and 4: are sections on the lines HIIII and IVIV respectively of Figure 2, and

Figure 5 is a sectional view, to an enlarged scale, showing the means for connecting the assembled cap to the cylinder.

Referring to the drawing, the drum housing 2 of the scale is provided with a flanged ring 3 connected by screws 23 to the housing. The ring 3 is provided with a central opening 5 in which is arranged a mirror 6. The ring has an outer flange 3 and an inner flange 7 the inner flange being adapted to engage the front face of the mirror. The rear face of the mirror is provided with a mirror pad 8 of cardboard, and the rear surface of the mirror is resiliently supported by means of springs 9 and 10 riveted together at 11. The spring 9 has depressed portions 12 formed intermediate its ends which contact with the mirror pad. The spring 10 has depressed end portions 13 for the same purpose. The normal, unflexed position of the spring 9 is indicated in dotted lines in Fig. 3. The spring 9 is secured adjacent its ends to the ring 3 by fastening means indicated generally by the reference character 4.

The fastening means 4 is shown in detail in 5. The spring 9 is provided adjacent its ends with openings 16 which correspond with openings 1? provided in the ring 3. A hollow bolt 18 passes through the corresponding openings 16 and 17 and its head 19 presses against the outer surface of the ring. The shank 20 of the hollow bolt carries a nut 21 which secures the spring 9 to the ring The hollow bolt 18 is provided with an opening 22 which receives a screw 23. As shown, the head of the screw is countersunk in the head of the hollow bolt. The screw 23 passes through the hollow bolt 18 and is secured to the scale frame 24.

From the above description it will be seen that the mirror 6 is resiliently supported against the inner flange 7 of the ring by the 1 rings 9 and 10. The ring is connected to 1e cylinder 2 by the fastening means shown in detail in Fig. 5. The hollow bolt 18 and nut 21 secure the springs 9 and 10 to the ring The screw 23 passing through the hollow bolt and secured at one end to the cylinder 2, connects the ring 3 and the cylinder. Thus, the fastening means shown in Figure 5 not only fastens the springs 9 and 10 to the ring, but it also connects the ring and the cylinder.

My invention provides a simple arrangement for yieldably supporting the mirror and ring to the cylinder of the drum scale. It decreases the number of fastening elements heretofore used for this purpose.

I have illustrated and described the present preferred embodiment of my invention. It is to be understood, however, that the invention may be otherwise embodied without departing from the spirit of the invention or the scope of the following claims.

I claim 1. An end assembly for a drum scale cylinder, which comprises a ring, a spring for supporting a mirror in said ring, means for 5 securing said spring to said ring, and means cooperating with said first-mentioned means for connecting the ring and cylinder.

2. An end assembly for a drum scale cylinder, which comprises a ring, a spring secured adjacent its ends to said ring and adapted to support a mirror intermediate its ends in said ring, and means extending through the means for securing the spring and ring, for connecting the ring and cylinder.

3. An end assembly for a drum scale cylinder, which comprises a ring having an outer and an inner flange, a mirror, said inner flange contacting with a face of the mirror to support it, a spring secured to said ring for supporting another face of the mirror, said spring and ring being secured by a hollow bolt and a nut on the bolt, and means extending through said hollow bolt for connecting the ring and cylinder.

4. An end assembly for a drum scale cylinder, which comprises a ring, a spring for resiliently mounting a mirror in the ring, said spring being provided with an opening, a hollow bolt passing through the opening in the spring and a corresponding opening in the ring, a nut on said hollow bolt for clamping said spring and said ring, and fastening means passing through said hollow bolt and secured to the cylinder for connecting the ring and cylinder.

5. An end assembly for a drum scale cylinder; which comprises a ring, a plurality of springs connected to each other at an angle for resiliently mounting a mirror in the ring,

: at least one of said springs having openings therein, hollow bolts passing through the openings in the spring and corresponding openings in the ring, nuts on said bolts for clamping said spring and said ring, and means passing through said hollow bolts for connecting the ring and cylinder.

/ In testimony whereof I have hereunto set my hand.

ANDREWV W. FERGUSON. 

